package cn.engage.controller;

import cn.engage.domain.User;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
@RequestMapping("/order")
public class OrderController {

  @Autowired
  private RestTemplate restTemplate;

  @GetMapping("/{id}")
  @HystrixCommand(fallbackMethod = "getUserByIdFallbackMethod") // 如果走不通就走熔断方法
  public User getUserById(@PathVariable("id") Long id){

    //String url = "http://localhost:10020/user/" + id;
    // 相当于发送http请求
    String url = "http://user-server/user/" + id;
    return restTemplate.getForObject(url, User.class);
  }
  // 托底方法的参数与返回值必须跟原方法一致，否则报错
  public User getUserByIdFallbackMethod(Long id){
    return new User(-1L, "触发熔断", "网络异常，请稍后重试！");
  }

}
